Daqin, You Are the Time Traveler

There are actually people who have traveled through time in the mighty Qin Dynasty. As the guardian Qin Yu, I am the first one not to support it. You have machine guns and artillery, Is it reasonable for me to use magic? You summon spaceships and launch nuclear bombs, My Nascent Soul army is reasonable, right? What, you still have aliens? System? Sorry, I am the rule of the road, I have a showdown. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.